This application provides users with access to download PDF maps of the Supervisorial Districts (countywide or by district) in various sizes. These maps were created by the Survey Mapping Property Management team in Public Works, and are meant for informational purposes only.

This layer contains the 2021 Official Supervisorial District Boundary for the County of Los Angeles, per Assessor parcels and the Department of Public Works' City/Community boundaries. Supplemental Information: Adopted December 15, 2021 - The County of Los Angeles Citizens Redistricting Commission’s Redistricting Plan adjusting the Official Supervisorial District Boundary for the County of Los Angeles pursuant to Elections Code Sections 21530 et seq. See Resolution No. 2021-04, Resolution of the County of Los Angeles Citizens Redistricting Commission Adopting a Redistricting Plan for the Los Angeles County Supervisorial Districts pursuant to Elections Code Section 21530 et seq.and Resolution No. 2021-05, Resolution of the County of Los Angeles Citizens Redistricting Commission Adopting a Redistricting Report for the Los Angeles County Supervisorial Districts pursuant to Elections Code Section 21534, subd. (d)(3). Per Sec. 21531 of the California Elections Code, Supervisorial District boundaries in the County of Los Angeles are adjusted in the year following the year in which the decennial federal census is taken. Published in the County Code under Title 1, Chapter 1.08, are boundary descriptions for the Supervisorial Districts.Last Updated: 3/4/2022

This layer contains the 2011 Official Supervisorial District Boundary for the County of Los Angeles, drawn at the parcel level, per Assessor parcels and the County Cadastral Landbase.Supplemental Information: Adopted September 27, 2011 – Another entry on this portal includes redistricting information from the Districts’ adoption in 2011, along with boundaries drawn at the TIGER street map level. Per Sec. 21500 of the California Elections Code, Supervisor District boundaries are adjusted following each decennial federal census. Published in the County Code under Title 1, Chapter 1.08, boundary descriptions are based on census tracts and city boundaries at the time of adoption.Metes and Bounds descriptions were prepared by the Department of Public Works.2010 Census Blocks provide more information and GIS data downloads on this portal. Census tracts listed in the County Code correspond to the first six digits of the GIS attribute CTCB10.City Boundaries and City Annexations provide current and historical legal city boundary information on this portal.

The LA County 2021 Redistricting WebApp provides an interactive platform that allows users to explore the changes in supervisorial district boundaries between the 2010 and 2020 redistricting efforts. The app visually compares the old and new district maps, highlighting shifts in geographic adjustments and the impact on political boundaries. Users can toggle between the 2010 and 2020 maps to see how population changes and community needs influenced the redrawing of district lines, ensuring fair and equitable representation across the county.

Supervisorial District Boundaries (1971) as derived from a scanned map. This layer was developed for informational and referential purposes, and for general investigation and analysis of district histories. The data may also be used for general cartographic purposes. It should not be used for legal questions.The data was digitized from scanned and rectified County Engineer maps provided by the Department of Public Works.Click here to view and download the scanned/rectified map as a .tif file

This application provides users with access to download PDFs of Community Profiles (for LA County, unincorporated and city areas), as well as maps of LA County Supervisorial Districts in various page sizes and detail. The Supervisorial maps reflect the district boundaries established on December 15, 2021 by the County of Los Angles Citizens Redistricting Commission.These maps were created by the Survey Mapping Property Management team in Public Works, and are meant for informational purposes only.

This layer contains the major boundary differences of Los Angeles County 2021 Supervisorial District boundaries and 2011 Supervisorial District boundaries.2021 Supervisorial District Boundaries was adopted on December 15, 2021, and maintained by LA County RRCC. 2011 Supervisorial District boundaries was adopted on September 27, 2011, and maintained by LA County DPW.How is this data created?This data is created by intersecting 2021 Supervisorial District boundary with 2011 Supervisorial District boundary and select only the major boundary change polygons.

This web map shows the major boundary differences of Los Angeles County 2021 Supervisorial District boundaries and 2011 supervisorial district boundaries.2021 Supervisorial District boundaries was adopted on December 15, 2021. 2011 Supervisorial District boundaries was adopted on September 27, 2011.How is this data created?This data is created by intersecting 2021 Supervisorial District boundary with 2011 Supervisorial District boundary and select only the major boundary change polygons.

This layer contains the 1991 official Supervisorial District Boundary for the County of Los Angeles, digitized from scanned maps. It was developed to provide reference for earlier supervisorial districts, and is not tied to parcels.

The Los Angeles County Flood Control District (District) was established in 1915 and encompasses approximately 2,758 square miles. The District operates and maintains one of the most complex systems of flood control and water conservation in the Country. The District’s current infrastructure includes 14 major dams and reservoirs, 483 miles of concrete and soft-bottom channels, 3,380 miles of underground storm drain conduits, 82,275 catch basins, 48 pump stations, 173 debris basins, 181 crib dams, 29 sediment placement sites, 27 spreading grounds, 21 low-flow diversion structures, 3 seawater barrier systems with 290 seawater barrier injection wells, 1 constructed wetland, and 1 mitigation bank area. Employees of the Los Angeles County Public Works (PW) serve as staff for the District. The District is separate from PW and funds of each entity remain in separate accounts. PW pays the District for the use of District equipment, materials and property used for County purposes. The District is empowered to carry out the objectives of the Los Angeles County Flood Control Act of 1915, California Water Code, Appendix, Chapter 28 (the Act). The objectives are to provide for the control and conservation of flood, storm and other wastewater and to protect from damage such as flood or storm waters, the harbors, waterways, public highways and property within the District. These powers are exercised by the County Board of Supervisors (Board), which acts as the governing body of the District. The duties of the Board include approving the District’s budget, determining the District’s tax rates, approving contracts, and determining when to issue bonds authorized by the voters of the District.

District boundaries for the Los Angeles County Board of Supervisors

Supervisorial Districts as of the 2001 redistricting. These boundaries were approved by the County Board of Supervisors in 2001, and represent the boundaries of their political jurisdictions and those areas that vote for them.

This layer is part of source data for the State of Poverty 2018-2024 Los Angeles County Dashboard.Layers include estimates of total population and population in poverty by demographics at each geography level in LA County.Source: Annual Population and Poverty Estimation, Los Angeles County ISD-Demography.Datasets for all years available in the State of Poverty dashboard:PAI Poverty Map Data 2024PAI Poverty Map Data 2023PAI Poverty Map Data 2022PAI Poverty Map Data 2021PAI Poverty Map Data 2020PAI Poverty Map Data 2019PAI Poverty Map Data 2018 Included Geography LevelsSplit Census TractsCensus TractsCountywide Statistical Areas (CSA)Public Use Microdata Areas (PUMA)Service Planning Area (SPA)Supervisor District (SD)Los Angeles County Split Census Tract and CSA boundaries correspond to the year of the population and poverty estimates. Census Tract, PUMA, SPA, SD, and county boundaries are current as of 2020 US Census. Field NamesPlease see Field Aliases for detailed field names.Field name logic:1st character Race/Ethnicityt = Totala = Asianb = Black or African Americanh = Hispanic or Latinoi = American Indian and Alaska Native (AIAN)p = Pacific Islanderw = White2nd character Gendert = Totalf = Femalem = Male3-4th characters Year2-digit year (2018-22)Possible 5th character Poverty Level (%FPL)a = Below 100% FPLd = Below 200% FPLg = Below 266% FPLRemaining characters after underscoret = Total (all ages)

Summarized to Supervisorial Districts from census tracts.For source data: https://data.census.gov/table?tid=ACSDT5Y2022.B21005For more information about this dataset, please contact egis@isd.lacounty.gov

Legislative District web map application is created to review and visualize current LA County legislative districts in an interactive way. This web map application includes Supervisorial Districts 2021, US Congressional Districts, California State Senate Districts and State Assemble Districts. The data source is the LA County eGIS Repository. This web map layer also includes county boundary as well as countywide statistical area (CSA) boundary and city/community names.

Supervisorial Districts (1991)

The Million Dollar Hoods project maps incarceration in Los Angeles County and estimates the fiscal and human costs of incarceration. For additional project and data information, the project maintains a github wiki site. For purposes of this project, estimates specific to LASD and LAPD were combined in columns titled "Combo." To normalize data, neighborhood population estimates were used. This layer is distinct from similar upload in that this layer has supervisor district (sup_dist) and service planning area (spa) as attributes, based on "center in" spatial join.For more information, please contact egis@isd.lacounty.gov

For more information about LA County efforts to provide housing and tenant protections, see the DCBA website.This layer is distinct from similar upload in that this layer has supervisor district (sup_dist) and service planning area (spa) as attributes, based on "center in" spatial join.For more information about this dataset, please contact egis@isd.lacounty.gov

This layer is part of source data for the State of Poverty 2018-2024 Los Angeles County Dashboard.Layers include estimates of total population and population in poverty by demographics at each geography level in LA County.Source: Annual Population and Poverty Estimation, Los Angeles County ISD-Demography.Datasets for all years available in the State of Poverty dashboard:PAI Poverty Map Data 2024PAI Poverty Map Data 2023PAI Poverty Map Data 2022PAI Poverty Map Data 2021PAI Poverty Map Data 2020PAI Poverty Map Data 2019PAI Poverty Map Data 2018 Included Geography LevelsSplit Census TractsCensus TractsCountywide Statistical Areas (CSA)Public Use Microdata Areas (PUMA)Service Planning Area (SPA)Supervisor District (SD)Los Angeles County Split Census Tract and CSA boundaries correspond to the year of the population and poverty estimates. Census Tract, PUMA, SPA, SD, and county boundaries are current as of 2020 US Census. Field NamesPlease see Field Aliases for detailed field names.Field name logic:1st character Race/Ethnicityt = Totala = Asianb = Black or African Americanh = Hispanic or Latinoi = American Indian and Alaska Native (AIAN)p = Pacific Islanderw = White2nd character Gendert = Totalf = Femalem = Male3-4th characters Year2-digit year (2018-22)Possible 5th character Poverty Level (%FPL)a = Below 100% FPLd = Below 200% FPLg = Below 266% FPLRemaining characters after underscoret = Total (all ages)

This layer is part of source data for the State of Poverty 2018-2024 Los Angeles County Dashboard.Layers include estimates of total population and population in poverty by demographics at each geography level in LA County.Source: Annual Population and Poverty Estimation, Los Angeles County ISD-Demography.Datasets for all years available in the State of Poverty dashboard:PAI Poverty Map Data 2024PAI Poverty Map Data 2023PAI Poverty Map Data 2022PAI Poverty Map Data 2021PAI Poverty Map Data 2020PAI Poverty Map Data 2019PAI Poverty Map Data 2018 Included Geography LevelsSplit Census TractsCensus TractsCountywide Statistical Areas (CSA)Public Use Microdata Areas (PUMA)Service Planning Area (SPA)Supervisor District (SD)Los Angeles County Split Census Tract and CSA boundaries correspond to the year of the population and poverty estimates. Census Tract, PUMA, SPA, SD, and county boundaries are current as of 2020 US Census. Field NamesPlease see Field Aliases for detailed field names.Field name logic:1st character Race/Ethnicityt = Totala = Asianb = Black or African Americanh = Hispanic or Latinoi = American Indian and Alaska Native (AIAN)p = Pacific Islanderw = White2nd character Gendert = Totalf = Femalem = Male3-4th characters Year2-digit year (2018-22)Possible 5th character Poverty Level (%FPL)a = Below 100% FPLd = Below 200% FPLg = Below 266% FPLRemaining characters after underscoret = Total (all ages)